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Nokia EKSOS Line Measurement Unit (T35140.01)

The optional Line Measurement Unit (LMU) makes it possible to remotely test the condition of copper access lines in a Nokia_EKSOS access multiplexer. It operates in conjunction with the test access relays in the interface units. Also, additional alarm inputs and outputs are available through the LMU.

The LMU supports the following features:
  • scheduled tests
  • line tests for PSTN and ISDN
  • high-accuracy measurement of line parameters such as capacitance, foreign voltage and leakage resistance
  • external test access (for testing the lines using external test equipment)
  • cable-pair identification-tone test for all line types
  • dry loop test
  • external alarm inputs (digital and analog) and outputs (digital).

Photos

eksos_lmu_top.jpg eksos_lmu_bot.jpg

Connectors

Name Designator Type Description
AUX J8 RJ45
ALRM J9 RJ45
EXT J10 RJ45

Main Circuits

Main Processor

Backplane interface

DSP / ADC / DAC

  • TI TMS320LC548PGE-66 fixed-point DSP
  • 2x ADI ADG408BR 8:1 Analog Multiplexer
  • 2x ADI AD822 rail-to-rail op-amp
  • 2x Infineon PEB4065T V4.0 HV-SLIC
    • High Voltage Subscriber Line IC
  • 1x AD7863AR-10 quad-input dual 175kSPS 14-bit SAR ADC
  • 1x AD8801 octal 8-bit TrimDAC
Files (14)
ADG408.pdf View ADG408.pdf 253 KB laforge, 09/10/2022 06:30 AM
TMS320LC548.pdf View TMS320LC548.pdf 895 KB laforge, 09/10/2022 06:31 AM
AD822.pdf View AD822.pdf 517 KB laforge, 09/10/2022 06:32 AM
AD7863.pdf View AD7863.pdf 1.03 MB laforge, 09/10/2022 06:36 AM
AD8801.pdf View AD8801.pdf 213 KB laforge, 09/10/2022 06:37 AM
K4F151612D.pdf View K4F151612D.pdf 378 KB laforge, 09/10/2022 06:43 AM
LH28F160S3HNS.pdf View LH28F160S3HNS.pdf 699 KB laforge, 09/10/2022 06:46 AM
MC68360UM.pdf View MC68360UM.pdf 6.85 MB laforge, 09/10/2022 06:48 AM
MC68360TUT.pdf View MC68360TUT.pdf 562 KB laforge, 09/10/2022 06:49 AM
MC68MH360UM.pdf View MC68MH360UM.pdf 1.51 MB laforge, 09/10/2022 06:51 AM
MC68360UMAD.pdf View MC68360UMAD.pdf 324 KB laforge, 09/10/2022 06:52 AM
eksos_lmu_top.jpg View eksos_lmu_top.jpg 3.96 MB laforge, 09/14/2022 11:01 AM
eksos_lmu_label.jpg View eksos_lmu_label.jpg 3.32 MB laforge, 09/14/2022 11:01 AM
eksos_lmu_bot.jpg View eksos_lmu_bot.jpg 3.76 MB laforge, 09/14/2022 11:01 AM

Updated by laforge about 1 year ago · 6 revisions

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